Yahoo published its own transparency report last week, divulging that it received more than 12,000 data requests from the U.S. government alone between Jan. 1 and June 30, 2013.

"We believe that the U.S. Government's important responsibility to protect public safety can be carried out without precluding Internet companies from sharing the number of national security requests they may receive," the company said in today's press release.

"Ultimately, withholding such information breeds mistrust and suspicion — both of the United States and of companies that must comply with government legal directives."